kEps is undefined in device code in file (generalized_projection_cuda.cu) 61

[IzzakQ]

Thank you for your project.
I'am Aerospace Engeneer and new in GitHub. I've a problem in building a project on VS2019.
When I run the build, the following error appears in the file generalized_projection_cuda.cu . There is a problem with the "keps" variable.

How to solve this problem?

Settings:
Windows 10
CUDA 11.2
Pytorch 1.12.1

identifier "geomlib::_NV_ANON_NAMESPACE::kEps" is undefined in device code	C:\Users\1\Downloads\interactive-hex-meshing-main\interactive-hex-meshing-main\out\build\x64-Debug\interactive-hex-meshing-main	C:\Users\1\Downloads\interactive-hex-meshing-main\interactive-hex-meshing-main\geomlib\geomlib\generalized_projection_cuda.cu	61	

  [197/260] Linking CXX static library vkoo\vkoo.lib
  [198/260] Building NVCC (Device) object geomlib/geomlib/CMakeFiles/geomlib.dir/geomlib_generated_generalized_projection_cuda.cu.obj
  FAILED: geomlib/geomlib/CMakeFiles/geomlib.dir/geomlib_generated_generalized_projection_cuda.cu.obj 
  cmd.exe /C "cd /D C:\Users\1\Downloads\interactive-hex-meshing-main\interactive-hex-meshing-main\out\build\x64-
  Debug\geomlib\geomlib\CMakeFiles\geomlib.dir && "C:\Program Files (x86)\Microsoft Visual 
  Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E make_directory
  C:/Users/1/Downloads/interactive-hex-meshing-main/interactive-hex-meshing-main/out/build/x64-
  Debug/geomlib/geomlib/CMakeFiles/geomlib.dir//. && "C:\Program Files (x86)\Microsoft Visual 
  Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -D verbose:BOOL=OFF -D 
  build_configuration:STRING=Debug -D generated_file:STRING=C:/Users/1/Downloads/interactive-hex-meshing-main/interactive-
  hex-meshing-main/out/build/x64-
  Debug/geomlib/geomlib/CMakeFiles/geomlib.dir//./geomlib_generated_generalized_projection_cuda.cu.obj -D 
  generated_cubin_file:STRING=C:/Users/1/Downloads/interactive-hex-meshing-main/interactive-hex-meshing-main/out/build/x64-
  Debug/geomlib/geomlib/CMakeFiles/geomlib.dir//./geomlib_generated_generalized_projection_cuda.cu.obj.cubin.txt -P 
  C:/Users/1/Downloads/interactive-hex-meshing-main/interactive-hex-meshing-main/out/build/x64-
  Debug/geomlib/geomlib/CMakeFiles/geomlib.dir//geomlib_generated_generalized_projection_cuda.cu.obj.Debug.cmake"
  generalized_projection_cuda.cu

[lingxiaoli94]

Hi, thanks for your interest. The kEps is defined at

interactive-hex-meshing/geomlib/geomlib/generalized_projection_cuda.cu

Line 15 in f6d3f2f

const float kEps = 1e-8;

, in the very same file. I'm not sure why it is not picked up by your compiler. Could you try if any of the following would work:

• Put const float kEps = 1e-8; outside the namespaces.
• Use macro #define kEps 1e-8 instead of const float kEps = 1e-8;

[IzzakQ]

@lingxiaoli94 thank you for the advice, they partially helped.
But the build still happens with errors, so what can you advise in this case? I was thinking of running your code on Ubuntu 20.04 ( as a last resort ) so that there would be no errors.

What can I try on Windows?